Fastener for sliding doors.



No. 727,293. PATENTED MAY 5, I903.

. L. 00111.; PASTENER r03 SLIDING DOORS.

APPLICATION FILED DEC. 4, I902. z

2 SHEETS-SHEET 2.

H0 MODEL.

F 5 l i g F 7 5 4 I I l I I l I 5 1 5 5 I z I I 2 s a U lT-E STATES Patented May 5, 1903;

PATENT FFICEL FASTENER FOR SLIDING DOORS.

SPECIFICATION forming part of Letters Patent N 0. 727,293, dated May 5, 1903.

Application filed December 4,1902. Serial No. 133.902. (No model.)

To all whom it may concern:

Be it known that I, LOUIS COIN, engineer, a

citizen of the French Republic, residing at Tassin La Demi Lune, near Lyons, France, have invented certain new and useful Improvements in Fasteners for Sliding Doors, of which the following is a specification.

This invention relates to a fastener for sliding doors; and the object of the invention is to provide a simple article of this character adapted to elfectively operate without the use of springs. Moreover, although this look is composed of very roughly cast parts, yet the friction is reduced to a minimum for the purpose of reducing the wear and tear to a minimum.

In order that my invention may be clearly understood, I will now proceed to describe it by referring to the annexed drawings, in,

which- Figure 1 shows the relative position of the parts when the door is closed. Fig. 2 shows the relative position of the partsduring the opening of the door. Fig. 3 indicates the positions which the parts occupy when the door is opened. Fig. 4 is a horizontal section.

Myimproved look is composed of two principal parts: first, a latch a, the point b of which is conveniently curved to the proper angle and can engage in a staple 0, carried The axles e g and the'stops h "6 7c are fixed permanently in a cavity or chamber provided in the movable door opposite the staple c. Fig. 4 shows how the axles and stop-pieces are preferably arranged. V

I place two wooden cheeks n on one side and the other of the latch and click-lever. These cheeks offer the requisite hearings or recesses to receive the axles e g and the stop pieces h 'i k, whose length is such that they do not extend beyond the wooden cheeks n. The recess formed in the door m is closed on each side by a metal plate o-for example, of brass-and on the front edge or jamb by another platep of the same kind. The plates 0 p are screwed onto the door m. This simple arrangement permits of easily placing in position and removing all the parts of the lock, since none of.,then1 are screwed or otherwise fixed in the door m.. It is only necessary to unscrew one of the plates 0 to be able to easily remove the whole of the lock.

. The cheeks n and, the plates 0 are pierced by a horizontal slot q, in which the spindle or axle 1', carrying the handles or knobs, is capable ofsliding movement or displacement. On this axle and between the two cheeks n is mounted a rollers. If the click-leverfwere not present, the latch a would rest permanently and by its own weight only on the roller 3, so that by acting on one of the handles so as to give the spindle r a to-and-fro movement one would bring about the oscillation of the latch at around its axle e. The checks n are provided with another recess or gap t, and the plate 19 is pierced by a hole to in order to permit the passage of the staple 0 when the sliding door is completely closed.

The action of the lock will be easily understood. When the door is closed, the point I) of the latch becomes engaged in the staple 0, thus keeping the door closed. The click-lever f rests on the forward-edge of the staple, as represented by the dotted lines in Fig. 1.

In order to open the door, it is suificient to actuate one of the knobs or handles in the desired direction. The spindle 'r is first of all displaced or slid-along in the slot q, and this brings about the elevation of the latch on bythe roller 8. Asthe pressure on the handle is continued the door m slides toward the right, which permits the click-leverf to come door is opened, one can act on the handle without inconvenience-that is to say, it need no longer be pressed to the right, the point of the latch therefore coming down on the point of the click-lever f. When it is desired to reclose the door, it is sufficient to pushit against the door-frame d. The forward edge of the staple o thereupon raises the click-lever f and permits of the latch a resuming the position which it occupies in Fig. 1.

As will be seen, this look depends only on the force of gravity. It does not carry any spring, and its parts have only to overcome the insignificant forces due to their more Weight, whereby the friction and consequently the wear and tear are reduced.

Having thus described my invention and reserving to myself to carry out any modifications of detail likely to facilitate the carrying into practice, I claim as my exclusive and private property conformably with the law- 1. A fastener for a sliding door comprising a casing, a pivoted gravity-latch in said casing, means forlit'ting the latch, a gravity clicklever shiftably supported independently of said latch and adapted to hold the latch in its ineffective position when the dooris open, means for maintaining the lever in its latchholding position, and a keeper supported independently of the casing, cooperative with the latch and adapted to project into said casing and to move the click-lever out of engagement with the latch, whereby the latter can drop into its effective position to engage the keeper.

2. A fastener for a sliding door comprising a casing, a pivoted gravity-latch in said casing, a sliding spindle carried by the casing for lifting said latch, a pivoted gravity click lever adapted to hold the latch in its ineffective position when the door is open, means for maintaining the lever in its latch-holding position, and a keeper supported independently of the casing, cooperative with the latch and adapted to project into said casing and to move the click-lever out of engagement with the latch, whereby the latter can drop into its effective position to engage the keeper.

In testimony whereof I have hereunto set my hand in presence of two subscribing Witnesses.

LOUIS COIN. Witnesses:

JEAN AVININ, VICTOR MELCHIOR. 

